This is Phone Scoop's in-depth look at the new HotSpot@Home service from T-Mobile, which goes live today. The service lets users roam between cellular and Wi-Fi networks seamlessly for calling. Do two radios make for a better cell phone?

One comment in your video is not correct. When using T-Zones the data connection is actually using the WiFi connection too (the EDGE icon on the display is showing you have a data connection to the network and not the type of conection). When on WiFi ALL the cellular services go through WiFi... (SMS, MMS, Calling etc.) Did you notice it was faster?

So i guess i'm concerned if this is going to work as the nights work. For example in nights if a call starts at 8:59 and you talk for 15 minutes, because the call started before 9 you WILL get charge the full 15 minutes from your day minutes... So what if you are ON the network and jump into a wifi network... how is t mobile going to charge that?? do the calls that switch from one network to the other count??? or are THOSE calls gong to be bill if you initiated the call on Tmobile's cell network?.... i wonder....

whatever network you are on when you begin the call is the network the call is credited to, so if you are on the tower network, the entire call is credited to that network, so yes, the entire call would be charged under your wenever minutes. on the ot...(continues)

If I already have a home wifi router, do I still have to pay a monthly fee to T-Mobile for UMA? The article indicates it is possible to select an existing wi-fi connection from available networks but it is unclear as to whether there is a fee to pay. Is it also possible to connect to a wifi hotspot elsewhere that is not T-Mobile??

1. Does anyone know how long the $10/20 promotional rate will last? 2. It would be nice if there were sexier phones available in the very near future. Any rumors?3. I'd love a 1-year contact. It seems like this service is not yet available through resellers like letstalk with 1-year contracts.

Now granted, this will actually provide a SERVICE to those with poor service in their homes, or to those who truly are holding back on their talking while home due to minute contsraints. For your average user...here is why it makes perfect sense to T-Mobile:

You have to be a min 39.99 rate plan which gives you 600 min.

You have to add $20 (Yes I know about the intro rate...even at $10 they get you) to get access to the unlim calling wi-fi option.

That would actually put your bill at $59.99...which on the regular T-mobile plans gives you 1500 Anytime.

They are counting on you NOT using more than 900 Additional minutes at home.

My T-mobile rep told me it can be used on any plan, which would inculde the 29.99 plan. They are saving money, because it really wont cost them anything to have people talk voIP, which is why the @home plan has unlimited usage.

First of all the service is $10. You will be able to purchase at that price through September. And if you get it at that price it stays at that price as long you keep it. Secondly I have a small business. I have an office downtown and one in my home. ...(continues)

Wi-Fi security uses either WEP or WPA I believe. I _know_ WPA2 is not supported.Also, the connection from the phone to t-mobile is an IPSec VPN connection, so even on an open hotspot the call is still secure.

Will this feature work in Wi-Fi spots internationally? Say in Europe? And if so, since your not being charged for minutes used over Wi-Fi connections (if I understood your review correctly) would'nt you technically be able (to a certain extent) roam internationally free of charge?

The answer is that because it's internet, it doesn't matter where you are! If you have a wi-fi access point abroad, and someone here calls your local TMO number, it finds you and not only is it unlimited for you, but free for your friends/family t...(continues)

They are the same because the call isn't VoIP, its GSMoIP, basically its just a different interface to the normal t-mobile network.But ya, t-mo's international rates are the same weather or not you are using wifi

No, all switches were completely seamless. There was no way to tell that the call switched other than to see the difference in the signal indicator. That sounds was my BlackBerry interfering with my videocamera.

I'm definitely not a T-Mobile fan boy, but this sounds like a great idea. It seams to work really well and would be a no brainier for families that have big talkers. This could be a real solution for people who want to get rid of their home phone service, and a reasonable work around for people who have poor coverage in their homes. But one question that either wasn't answered or I missed, How does this service effect data speeds?

At the moment, there is no data side to the Hotspot for home. It is strictly for making calls so if there in no reception in your house without Hotspot then you wont have a data connection, you must have missed it in there he mentioned alittle bit abo...(continues)